title: Four new sesquiterpenoids from the fruits of Alpinia oxyphylla.
abstract: Two new norsesquiterpenoids, oxyphyllenotriol A (1) and oxyphyllone G (2), and two new sesquiterpenoids, oxyphyllol D (3) and oxyphyllol E (4), together with two known compounds (5, 6) were isolated from the fruits of Alpinia oxyphylla. Their structures were determined on the basis of spectroscopic analysis, including high resolution electrospray ionization mass spectrometry (HR-ESI-MS), 1D- and 2D-NMR, and the absolute configurations of 2 and 4 were determined by theoretical calculation of electronic circular dichroism (ECD) and comparison with the experimental ECD spectra.
authors.affiliation: Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, People's Republic of China.
authors.forename: Xiao-Qing
authors.initials: XQ
authors.lastname: Lv
authors.forename: Jian-Guang
authors.initials: JG
authors.lastname: Luo
authors.forename: Xiao-Bing
authors.initials: XB
authors.lastname: Wang
authors.forename: Jun-Song
authors.initials: JS
authors.lastname: Wang
authors.forename: Jun
authors.initials: J
authors.lastname: Luo
authors.forename: Ling-Yi
authors.initials: LY
authors.lastname: Kong
mesh_terms: D032429:Alpinia / Q000737:chemistry*; D002942:Circular Dichroism; D005638:Fruit / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D012717:Sesquiterpenes